12.0 Compass Mode -
Precautions
12.1 Compass Mode - Compass Directions and Bearing Directions
12.2 Compass Mode -
Compass Mode
12.3 Compass Mode -
Backward Bearing Direction and Compass Lock
Backward Bearing Direction
!
The Watch includes a backward bearing function.
!
The backward bearing direction is the bearing
direction in the opposite direction from the
normal bearing direction.
!
When the 'Backward Bearing' indicator " "
appears, the Watch is showing the backward
bearing direction of the navigation direction.
!
In the Compass Mode, press the [S/S] button to
select between normal and backward bearing
directions.
Compass Lock
!
The Watch includes a compass lock function that
locks useful direction reading.
!
In the Compass Mode, press the [L/R] button to
lock/unlock the direction reading.
!
When the "Lock" indicator " " appears, the
compass direction, bearing direction and the
magnetic north pole pointer are locked.
!
Compass Lock will be released automatically
when the Watch enters IDLE Mode.
0°
COMP
Norm al Bearin g Dire ctio n
Backward Bearin g Dire ctio n
305°
125°
0°
0°
backward
bearing
indicator
normal
bearing
direction
backward
bearing
direction
[S/S]
Dire ctio n Unlo cked
Dire ctio n Locked
compass
lock indicator
[L/R]
COMP
COMP
COMP
Precautions for using the Compass
!
Check the 'What is Magnetic
Declination' section for more details.
Keep your Watch away from magnets or any
appliances which may contain magnetic objects
such as mobile phones, speakers, motors and
etc.
!
The Watch, like most magnetic compass, points
to the magnetic north which is slightly different
from the true north.
!
Perform the compass calibration from time to
time, because the calibration can ensure the
precision of the compass.
!
To achieve an accurate result, you should avoid
measuring direction on the following conditions:
1) The watch is placed close to the magnetic
objects,
2) The watch is placed close to the metal
objects,
3) The watch is placed close to the electrical
appliances
4) The watch is placed inside a moving object or
a ferroconcrete building.
The Direction of an Object
!
The direction of an object from a point can be
specified in either compass directions or bearing
directions.
!
The Watch includes both compass directions and
bearing directions.
The Compass Directions
!
The compass directions are shown in the
adjacent table.
!
For example, in the figure on the left, the
compass direction of object B from point A is due
East. The compass direction of object C from
point A is Southeast. The compass direction of
object D from point A is Northwest.
The Bearing Directions
!
The Bearing direction of an object is defined as
the
angular difference between North and the
object. (Assume 0 for due North, and the
measuring range is from 0 to 359 ).
!
For example, in the figure on the left, the bearing
direction of object B from point A is 90 . The
bearing direction of object C from point A is 135 .
The bearing direction of object D from point A is
315 .
°
°
°
°
°
°
Compass Mode
!
In the Compass Mode, the top row of the display
shows the compass direction.
!
The middle row of the display shows the bearing
direction.
!
The bottom row of the display shows the current
time in hour and minute.
!
The pointer encircled the display shows the
direction of magnetic North analogically.
IDLE Mode
!
If no key is pressed for about 1 minute, the watch
will go to the IDLE Mode automatically. To activate
the compass again, press any button.
Distortion
!
If distortion is detected, the indicator "
OFF CAL
"
and flashing bearing direction will appear.
!
Please refer to the coming section "Calibrating the
Compass" to restore the compass to normal
operation when distortion is detected.
COMP
Digital Compass Mode
current time
bearing direction
of navigation
direction
magnetic north pole
pointer
navigation direction
compass direction
object B
object B
object C
Compass Directions
Bearing Directions
object C
object D
object D
angular
difference
point A
N
E
90°
SE
135°
NW
315°
point
A
0°
0°
N
Marks
N
NE
E
SE
SSE
SSW
WNW
NNW
Compass Directions
Bearing Directions
North
Northeast
East
Southeast
East Southeast
South Southwest
North Northwest
S
SW
W
NW
South
Southwest
West
Northwest
ESE
ENE
WSW
NNE
West Northwest
West Southwest
South Southeast
East Northeast
North Northeast
Compass Mode
Idle Display
Normal Display
Distortion display
COMP
COMP
COMP
